AP EAMCET · Maths · Probability
A bag contains 6 balls. If 4 balls are drawn at a time and all of them are found to be red, then the probability that exactly 5 of the balls in the bag are red is
- A \(\frac{10}{19}\)
- B \(\frac{5}{21}\)
- C \(\frac{1}{21}\)
- D \(\frac{5}{7}\)
Answer & Solution
Correct Answer
(B) \(\frac{5}{21}\)
Step-by-step Solution
Detailed explanation
Let us define the following events \(E=\) drawn balls are red. \(\quad A=4\) red balls in bag. \(B=5\) red balls in bag. \(C=6\) red balls in bag. Then, \(P(A)=P(B)=P(C)\)…
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